Forward Head Posture Fix

Forward Head Posture Fix

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32 Cranial roots (vagal part). Radices craniales (pars vagalis). Fibers from the nucleus ambiguus which leave the accessory nerve in the jugular foramen and join the vagus nerve. B

33 Spinal roots (spinal part). Radices spinales (pars spinalis). They arise from the base of the anterior horn of the cervical spinal cord (C1-6) and form a trunk which ascends into the subarachnoid space of the skull where it unites temporarily with fibers from the cranial roots. B

34 Accessory nerve trunk. Truncus nervi accessorii. It is formed by the union of both roots. B

35 Internal branch. Ramus internus. Fiber tract associated with the vagus nerve and formed by the united cranial roots of the accessory nerve. B

36 External branch. Ramus externus. United spinal root fibers of the accessory nerve. They supply the sternocleidomastoid and trapezius muscles. B

37 Muscular branches. Rami musculares. Branches supplying the sternocleidomastoid and trapezius muscles. B

1 HYPOGLOSSAL NERVE (XII). N. hypoglossus [XII]. Twelfth cranial nerve. Formed by numerous roots emerging from the brain between the pyramid and olive. It passes through the hypo-glossal canal and descends between the internal jugular vein and internal carotid artery. At the level of the angle of the mandible it then proceeds anteriorly above the posterior margin of the floor of the mouth to enter the tongue. B

2 Lingual branches. Rami linguales. Rami beginning lateral to the hyoglossus muscle and supplying the styloglossus, hyoglossus and genio-glossus muscles as well as the intrinsic muscles of the tongue. B

3 SPINAL NERVES. Nervi spinales. They are formed by two roots and, in contrast to the cranial nerves, they exit through the intervertebral foramina. A C

4 Root filaments. Fila radicularia. Fine root fibers emerging from the spinal cord within the anterior and posterior roots of the individual spinal nerves. A

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